Sight feed



April 24, 19,28.

E. M. SCOVILLE SIGHT FEED Filed May 19. 1927 in operation.

Patented Apr. 24, 1928. d

UNTED sTATEs EUGENE iii. scovILLn, or CINCINNATI, `oIIIo,`fAssI iNoit orONE-HALF .To FLOYD L.

swANBEnG, oF PITTSBURGH, PENNSYLVANIA. f

SIGHT FEED] `Application flied. May 19,

This. invention relates in general to imyf provements in sight feeds,rand relates more specifically to improvements in the construction and'operation ofvisible flow indicators` forv liquids such as lubricatingoil or the like.

leakagel of liquid is positively eliminated.

Ajfurther object of the invention is tov providea ycompact sight flowdevice which is simple in construction and (highly efficient Stillanother'object of the iii-y vention is to provide a sight. feed unitwhich may be readily manufactured, assembled and dismantled. A. furtherobject of the invention is to` provide a flow indicating lunit which maybe conveniently installed vandV manipulated, and the various elements`of which may be `quickly, adjusted. Another object of the invention isto providea sight feed lubricator which may ,be readily ,in-g spectedand cleaned'in orderto maintain the same in operating condition, andvwherein an',

emergency source of' lubrication" may bey provided in case the normalsource of'supply fails. 4Still another object of the in-1 vention is toprovide a sight feed which is,

readily insertible as aunit between anoil supply line and a source ofutilization,v re.

gardless of the relative position of thesupply line outlet and thesource inlet. These` and other objects and advantages of the..

improvement will be apparentfrom the follOWIlg description. Y l y Aclear conception of -an eiiibo'diment*ofj the invention and ofthe modeof operating,

adjusting and installing devices constructed' in accordance therewith,maybe'had by fre-v ferring to the drawingl accompanying vand forming apart of this specification in which like reference characters designatethe same or similar parts in the various views.

Fig. 1 is a central vertical section through 'I vided with internalabutment surfaces 19 one of the improved sight feeds,y showing the samecompletely assembled.

. Fig. 2 is a side elevation of the `assembled y p the. casing 5, thiscoaction being such' that sight feed.

An object vof the invention is to provide er tov 1927,; semi No.v192,771).

Fig. 3 isa feed.

top view of the assembled sight` Fig. itis aftop `viewl of a modifiedform of fluid ldistribution fitting' adapted for interchangeable"application to the sight feed ofFigslto.v f y Fig.,5` is a'l top viewof another *form of fluid r,distribution l,fitting which is interchangeably appl-icableto the sight feed.

to the fluid supply and distributing fittings.

A.The 'improved sight feedspecically illus- `trated in the drawing,comprises in general a main body 2 having lateral side openings; athreaded base 3 detachably associatedwith the lower portion of the body2 and adapted forattachmentdirectly to a bearing or'the like; acasingpivotally associated with Vthe upper'portion lof the body 2; clampingstructure consisting ofv a nut 6 having screw thread coaction with thecasing 5 and adjustable relatively tothe body'v 2; and..l one of several'different types vof fluid distribution fittings 4.-, d

24, 34, 44,54; interchangeablyand reversibly f cooperable with-thecasing5 between the body 2` andthe nutr 6. A Resting upon thek base 3y Vwithin the body 2, is a tubular transparent member 1l the upper end ofwhichis normally engagedbyr a centrally perforatedannular retaining capV10. The cap 10 is con.

stantly rurged y,in va Vdownward direction against themember 'll bymeans of ahelioal f spring'lfthe upper end' of which reacts against thelower endof the casing, and the 'transparentvmember11 may be freelyremoved through thelateral openings of thel body 2 wheiitlie cap l0 israised against the action l of `the spring l5.y When the transparent`member 1l has been removed, the ldownward movement of the cap 10 islimited by means of stop pins 28 secured to the body 2, \these pins alsoserving-tok center the member 1l. .y l y,

Theupper portion .of the body 2 is pro- Which areengaged lby an annularflange or lugs fo'rmedintegral with the lower end of fill vwith athreaded socket and the lower discharge end of which is in verticalalinernent with the .final discharge passage 21 of the base 3. The upperthreaded socket of the casing 5 may either be sealed by means of a pipeplug 7 as shown, or may beprovided with an emergency oil cup fordelivering oil directly to the bearing or other source of utilizationthrough the passages 17, 21, in case the normal source of supply fails,The casing 5 also provided with 'an annular eX- ternal recess 16 whichis communicable with the central passage 17 through a lateral port 45. vEach of the fluid supply and distributing fittings 4, 24, 34, 44, 54, isprovided with one or more radially disposed threaded openings 23, andwith a central bore 26 adapted to snugly lit the enternal cylindricalsurface of the casing 5 and to thus inclose the re.- CQSS The. :fittings4'# 847 4&1 are also provided with threaded bosses 25 each formed forthe reception of a needle valve 14 as shown in Fig'l, the needle valvebeing adjustable by means of a hand wheel 22 and having an inner pointedend cooper-able with the port 45 to control the fiow therethrough, Thelittings 4, 24, 34, 44, 54 are moreover provided with oppositelydisposed chamfers 27 adjacent to the bores 26, 'these chamfers beingfilled withsuitable packing material in the assembled structure. Thethreaded bosses 25 of thel fittings are additionally provided withpacking elements 18 foi-.sealing the j ointaro'und the needle valve 14.

Each of the threaded openings 23 is formed for the interchangeablereception of either a union 12 such as shown in Fig. 1, 0r a union 13 asshown in Fig. 8. When the coupling type of union 12 shown in Fig. 1 semployed, the Supply and discharge Pipes 9 may be attached to the unions12by means of 4pipe couplings 8, lWhen the threaded type of union 13shown in Fig. 8 is employed.` the supply and discharge pipes mayattached ,directly to the threaded socket-s of the, unions in an obviousmanner,

Of the live diderent types of fittings 4, 24, 34, 44, 54, the fitting'4is of the single symmetrical type wherein the single opening 23 is indirect alinement with the boss 25g The fitting 54 is of the single-typewherein the opening 23 extendsv at right'a'ngles relative to thel axisof the boss 25. The fitting 44 is of the double z'symmetrical typewherein the oppositely disposed alined openings 23 are disposed at rightangles to the axis of the boss 25, and the fitting 34 is ofthe doubletype wherein one opening 23 is in alineme'nt with the axis of the boss25 while the tion. The base 3 `may other opening 23 extends at rightangles thereto. 'The fitting 24 is of the three way type wherein oneopening 23 is disposed in direct alinement with the boss 25 while theother two opposed openings ,3 are in aline,- ment with` each other butextend at rightv angles to the boss axis. All of these fittings arevinterchangeably and reversibly cooperable with common casing 2.

When assembling the sight feed, the easing 5 is first slipped throughthe lower end of' the body 2 after which the spring 15, cap 1 0 and'pins28 are successively applied to maintain these elements in assembledrelathen be attached to the body 2 after which the transparent inember11 may be inserted between the base 3 and the cap 10. Any one of theiittings 4, 24, 34, 44, 54 maythen be slipped over the upper end of thecasingv 5, and the clamping nut 6 subsequently appliedv to lock thelltting against the body 2 with the axis of the boss 25 in alinementwith the ,port 45, suitable packings having been previously applied yinthe chamfers'27. The pipe plugA and needle valve 14 may then be applied.in an obvious manner thus completing the vas.- semblage of' the sightfeed. The' installation of the sight feed may readily be effected byattaching the base 3 to the bearing and by attaching the supply anddischargepipes 9 to the fitting which embraces the casing 5. If theopening 23 of the fitting is not prop erly directed to accommodateattachment of the supply pipe 9, after attachment ofthe base 3 to thebearing,fthe clamping nut k(i may `bereleased, thereby permitting freeangular adjustment of the distributing fitting about the casing 5. 4

During normal operation-'of .the sight feed '1 when utilizing a singlefitting 4, 54, the en` tire supplykorn oil is admitted from the supplypipe 9 to the recess 16 and is delivered in` controllable 'quantitiespast thev needle valve 14 to the passage 17 from whence it gravitatesthrough the transparent member 11 to the bearing'through the dischargepas# sage 21. All of the oil admitted tothe recess 16 is thus deliveredto the single bear-y ing when the single fittings are eniployed,` andthe member ll'provides a visible indi-l cation of the rate of feed.W`hen utilizing either ofthe multiple fittings 24, 34, 44, onlyajportion of the oil supplied to the recess 16 of the casing 5,`isdelivered through the port 45 thereof, the remainder ofthe oilv suppliedbeing discharged through the openings 23 other than that being utilizedas a supply" opening, and which other openings may be connectedA toother sight feeds associated with additional bearings of a group.v lf'itj is not desired to utilize one or more of the openings 23 of a multiplefitting, such open- `ing or openings may be sealed by means of a pipeplug 7 cooperating with a union, and

"s be;

rio

an emergency oil-cup maybeprolvided `in.

substitution for the closure'plug atk the top of the casing 5, wheneverldesired.v The reversibility of the fittings is especially useful whenemploying fittingsvv l34,54 as shown inV Figs. 6 and4. rIhese fittings34, 54 may be* reversed with respect to the casing 5 in.:y

order to accommodate. connection thereof to supply ordistribution'pipes'9disposed at v right angles to each other or to theaxis of the needle valve 14, in an obvious manner, and lthus eliminatenecessity of providing right and left hand fittings.

From the foregoing description it will be apparent that the improvedsight feefd` while being extremely simple and compact iii construction,is also highly r`flexible as to installation and adjustment.vThendeviceis moreover exceedingly eliicient in operation and may bereadily assembled and dismantled.

Thetiansparent member 11 maybe convene iently removedv or applied'whilethe sight feed is in operation, and the pacliiigs effectively pieventundesirable escape of oil. The reversibility and interchangeability ofthe fittings 4, 24, 34, 44, 54v reduces to'a mini-` mum the number ofstock parts required and the angular'adjustment ofthe fittings greatlyfacilitates installation of the sigl'itfeed. The unions l2, 13' alsoenhance the flexibilityk of the unit andenable the use of any desirableform of piping.

It should lbe understood thatit is not desired to limit the inventiontothe exact details of Construction and operation herein shown anddescribed, for various modifications within the scope of theclaimsfm'ayl occur to persons skilled in the art.

It is claimed and desired to secure byfIieti ters Patent gj y l. Incombination, a body having'` a normally visible interior, a transparentmember confined within said body, a casing carried by and havingpassages communicating with the interior of'sai-d body, clampingstructure adjustably coacting with said casing, 'and a fitting embracingsaid casing andadjustablyl retained imposition by said body and saidclamping structure.

2. In combination, a body having a normally visibleinterior, atransparent` mein-l ber confined within saidvbody, a casing roby saidbody, and resilient means cooperating ywith said casing and witlisaidmember to retain said member in position within said body.

4. In combination, a body having. opposite side openings, a? transparenttubular member located within .said-,body and removable through one-ofsaid openings,VV a casing coacting with said .body above said openings,anda spring "cooperating with said, casing and with said member toresiliently retain',

said tube inn position, said tube being removable `through saidopeningby compressing said spring.'

5. In combination, body having a side opening, a transparent; tubularmember covering said opening, a casing pivotally associated. with said.body and having internal `passages',means for controllingthe flow ofvfluid through said passages to' said body,

clamping structure adjustably associated with said casing, and a fittingfor introduc-` f i ingvliqi'iid'to` said casing, said fitting beingadjustably'retained in position by said body and said clampingstructure.

- 6. In combination, la'bo'dy having aside opening, a transparent membercovering said opening, a casting rotatably attached to said body abovesaid opening, said casing having passages ycommunicating with theyinterior ofy said lbody,'a fitting pivotally supported'by said body andembracing said casing, and a needle valve carried by said fitting andadjustable relative to said casing to control'the flow of liquid throughsaid'pa'ssages. v

7. In combination, a body having a side opening,r a casingrotatablerelative to the upperv portion of said body, a transparent tubularmemberv located within said body andv removable through said opening, acap coactingy with the top `of said member, and a `spring coacting withsaidcasing and lwith said'icap yto retain 'said membei' in position.

Q8. In combination, a body having a side opening, a base secured. tosaid body'v below said openingga casing securedto said body abovesaidropening, a ytransparent tubular memb'errestingupon vsaid baseWithin said body,ia`cap resting upon said member adl joiningsaidopening, and a` spring coacting cap' and with an end of' directlywith said said casing. l i .f

9. In combination,- a body having a side opening, a base secured tothe`bottom of said body, acasing rotatable relative to the top upon saidbase, a capresting iiponsaid -meinber, a spring coacting-with said capand with said casing, and a fitting angularly adjustably coacting with`said casing and with Vsaid body.

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of said body, atransparent member IrestingV 10. In combination, a hollowbody having a side opening, a transparent member cover-j` ing saidopening, a casing secured to the upper portion of saidjbody, said casinghaving a through passage vdirected toward said body and also havingalaterally extending passage, removable means for normally sealing theupper end of said through passage,

and aiitting embracing said casing and providing a liquid supply conduitcommunieating with said lateral passage.

l1. In combination, a body having ,an opening and an interioi normallyvisible through said opening, a transparent menibei` coveringsaidopening, a casing-,carried by and having passages coinn'ninioatingWith the interior of said body, clamping structure adjustably carried bysaid easing, and a 'fluid supply fitting reversibly coopeifable withsaid casing; and adjustably ietained in position by said body and saidClamping structure.

12. ln combination, a body having a noiina-lly visible interior, aeasing@` pivotally associated with and having passages communicatingwith the inteiioi` oil? said body, ola1nping structure adjustablycarried by said Casing, and a fluid supply fitting reversibly oooperablewith said easingand angularly adjustably retained in position by saidbody and said clamping stimotni'e7 said itting having at least tvvofluid conducting passages, radiating from the central axis ofsaidcasfittings interchangeably coope'rable With said casing betweensaid body andsaid Clampingl stiruetui'e. n l n In testimony whereof, thesignature of the inventor 1s afhXe-d hereto.

EUGENE M. soovILLE.

